<template>
  <div class="list" ref="wrapper">
    <div>
        <div class="area">
            <div class="title border-topbottom">
                您的位置
            </div>
            <div class="button-list">
                <div class="button-wrapper">
                    <div class="button">{{this.currentCity}}</div>
                </div>
            </div>
        </div>
        <div class="area">
            <div class="area">
            <div class="title border-topbottom">
                热门城市
            </div>
            <div class="button-list">
                <div class="button-wrapper"  v-for="item of hotCities" :key="item.id" @click="handleCityClick(item.name)">
                    <div class="button">{{item.name}}</div>
                </div>
            </div>
        </div>
        <div class="area" v-for="(item , key) of cities" :key="key" :ref="key">
            <div class="title border-topbottom">
                    {{key}}
                </div>
                <div class="item-list">
                    <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">
                        {{innerItem.name}}
                    </div>
            </div>
          </div>
      </div>

    </div>
  </div>
</template>

<script>
import { mapState, mapMutations } from 'vuex'
import Bscroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  methods: {
    handleCityClick (city) {
    //   this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, {click: true})
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.border-topbottom
    &:before
        border-color:#ccc
    &:after
        border-color:#ccc
.border-bottom
    &:before
        border-color:#ccc
.list
    overflow :hidden
    position: absolute
    top:1.58rem
    left :0
    right :0
    bottom :0
    .title
        line-height :.54rem
        background :#eee
        padding-left :.2rem
        color:#666
        font-size:.26rem
    .button-list
        overflow :hidden
        padding :.1rem .6rem .1rem .1rem
        .button-wrapper
            width:33.33%
            float :left
            .button
                margin  :.1rem
                padding :.13rem 0
                text-align:center
                border:.02rem solid #ccc
                border-radius:.1rem
    .item-list
        .item
            line-height :.76rem
            padding-left :.2rem
</style>
